Window-sash balance.



w. B. & E. M. GRBEAR & 1). 00x;

WINDOW BASH BALANOB.

APPLICATION I'ILBD $113.25, 1909.

v Patented-De 14,1909.

anoantot a/U' Witnwou WTTED %TAT% ATNT @FFTQE.

WILLIAM B. GREEAIR, EUGENE M. GREEAB, AND DAVID COX, 0F HONAKER, VIRGINIA; SAID COX ASSIGNOR TO SAID WILLIAM B. GREEAR AND EUGENE M. GREEAR.

WINDOW-SASH BALANCE.

Specification of Letters Patent.

Patented Dec. 11%, Twas.

Application filed February 25, 1909. Serial No. 480,039.

To all whom it may concern;

Be it known that we, W LLIAM B. GREEAR, EUGENE M. GREEAR, and DAVID Cox, citizens of the United States, residing at Honaker, in the county of Russell and State of Virginia, have invented certain new and useful Improvements inlVindow-Sash Balances, of which the following is a specification, reference being had to the accompanying drawmgs. j

Thisinvention relates to improvements in windows and more particularly to sash balancing devices.

The object of the invention is. to provide an improved flexible and spring connection between the two sliding sashes of a window, whereby they will balance each other and be simultaneously moved in opposite directions, but may also be independently moved.

With the above and other objects in view, the invention consists of the novel features of construction and the combination and arran 'ement of parts hereinafter fully descri ed and claimed, and illustrated in the accompanying drawings, in which Figure 1 is a front elevation with parts in section, pf a window constructed in accordance with the invention; and Fig. 2 is a vertical sectional view taken on the plane indicated by the line 22 in Fig. 1.

Tn the drawings 1 denotes the frame or casing of a Window in which upper and,

lower sliding sashes 2, 8 are arranged.

These. sashes are connected together for simultaneous movement and also for movement independent of each other by flexible connections consisting of pords or similar flexible elements 4 and coi springs 5. The cords and springs are'connected together at one end and arranged within the portions of the frame 1, the lower ends of the springs being connected to outwardly projecting arms 6 secured'to the sides of the lower sash adjacent its bottom and arranged for sliding movement in vertical slots 7 formed in the frame 1. The cords 4 extend over grooved guide ulleys 8 arranged-in metal casings 9 secured in the upper portions of the sides of the frame 1, and said cords, after passing over the pulleys, extend downwardly into and are secured in vertical grooves 10 formed in the upper side ed es of the upper sash 2. The length of the exible and spring connections between the two sashes is such that when the lower sash is lowered to the bottom of the frame, the upper sash will be held in a closed position in the top -of the frame, the two sashes thereby balancing each other. These connections, therefore, not only connect the two sashes'for simultaneous move- 'ment but permit either sash to be raised or lowered while the other is stationary, owing to the arrangement of the springs 5 in said connections v For the purpose of locking the sashes at any adjusted position in the frame, a wedgeshaped locking plate 11 is pivotally mounted on each sash. For the purpose of lock-- ing the two sashes to each other, a ratchet member lt'is arranged upon the front face of the upper sash 2 and a co-acting pawl or dog 15 is arranged upon the top of the lower sash 8.

The operation 'of the invention is as follows: When all three of the locking devices are in inoperative positions and the lower sash is moved downwardly 1n the frame, the

upper-sash will be simultaneously elevated.

When said lower sash is raised the upper sash w1ll be lowered since they are connectedtogether so as to balance'and support each other. Should it be desired to have the top of the Window frame open, the wedge-shaped locking plate 11 on the lower sash is turned to its locking position to hold the lower sash stationary and the upper sash ma then be lowered anydesired extent and loclied either by the wedge-shaped locking plate 11 on said upper sash or by the locking in or dog 15 and the co-acting ratchet 14. Vhen it is desired to have only the bottom of the frame open, the up er sash may be locked by the wedge-shape locking plate 11 upon it and the lower sash may then be raised and secured in adjusted position either by the wedge-shaped" lockin plate 11 upon said lower sash or by the ocking pin 15 and coacting ratchet 14:. When it is desired to have the frame open both at its top and bottom, the lower sash is raised to the esired extent, whereupon the upper sash will be correspondingly lowered, and the two sashes may be locked together by means of the pin 15 and co-acting ratchet 14.

Having thus described the invention'what is claimed is z' The combination of a Window frame having its sides formed in their lower portions with vertical slots and in their upper ortions withopenings, upper and lower sli ing sashes in said frame, horizontally projecting arms arranged on the lower side portions of the lower sash to move in said sIots, guide a cord and a coil spring, said elements belng passed over the guide pulleys and having their upper ends connected to the lower portio'ns or the upper sash and their lower ends connected to said arms, said springs being of such size as to permit either sash to be moved from its full open to its full closed position without disturbing the other sash.

In testimony whereof we hereunto affix 15 our signatures in the presence of two witnesses.

W. B. GREEAR. E. M. GREEAR. DAVID COX. 

